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This idler is a stock size replacement for the steel GT500 Thump Tensioner pulley. Our pulleys are hard black anodized to ensure a durable and long lasting finish. They also come preinstalled with premium bearings.
Weight comparisons:
Thump: 478g (1.05lb)
Billet Pro Shop: 220g (0.5 lb)
*Please install with retaining clip facing the front of the car.
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